package com.buaa.leecode.model;

public class TreeNode {
    public enum NodeType {
        LINE_END,//换行节点
        NULL,//空节点
        NORMAL,//普通节点
    }

    public int val;
    public TreeNode left;
    public TreeNode right;

    public NodeType nodeType;

    public TreeNode(int x) {
        val = x;
        nodeType = NodeType.NORMAL;
    }
}
